Quercetin glycosides from European aquatic Ranunculus species of subgenus Batrachium

Abstract A chemical investigation of the leaves of aquatic Ranunculus species yielded six quercetin glycosides and eight acylated quercetin glycosides, three of which are reported for the first time: quercetin 3-(6″-malonylglucoside)-7-glucoside and the partially characterized quercetin 3-caffeylsophoroside-7-caffeylglucoside and quercetin 3-caffeylsophoroside-7-ferulylglucoside. © 1997 Elsevier Science Ltd. All rights reserved